A.在全額累進(jìn)稅率下，一定征稅對(duì)象的數(shù)額只適用一個(gè)等級(jí)的稅率
B.在超額累進(jìn)稅率下，征稅對(duì)象數(shù)額越大，適用稅率越高
C.對(duì)同一征稅對(duì)象采用同一稅率，按超額累進(jìn)稅率計(jì)算的應(yīng)納稅額大于按全額累進(jìn)稅率計(jì)算的應(yīng)納稅額
D.按全額累進(jìn)稅率計(jì)算的應(yīng)納稅額與按超額累進(jìn)稅率計(jì)算的應(yīng)納稅額的差額為速算扣除數(shù)